SIP Softphone for PC windows

We are looking for a PC software that works with our softswitch with unlimited user licence. requirements: Call Recording Call Conference video call Hold / Unhold Transfer/forward to mobile or landline DND (Do not Disturb) Redial Mute Auto accept call Codec Supported G729,G723, G711 u, G711 a, G722, GSM, iLbc, Speex/ 8000, Speex/16000 , Speex / 32000 Codec selection and Codec Quality Control (Bandwidth control) Silence Suppression Echo Cancellation Uses NEW RFC 3261 compliant stack DTMF (RFC 2833) RFC 3951: Internet Low Bit Rate Codec (iLBC) Proxy Settings Registration Timeout Acoustic Echo Cancellation. Packet concealing Packet Lost Concealment (PLC). Comfort Noise Generator (CNG), Resampling Balance Display Credit time display: Customized skin interfaces Call timer Last Number Redial Touch Tone Address Book Micro Phone Volume Control Speaker Volume Control Work with any full-duplex sound card Auto-configuration of settings for easy deployment IM for msn,yahoo, google SMS search for peer friends & peer calling &chat